from django.db import models

# Create your models here.
from django.db import models
class Area(models.Model):
    name=models.CharField(max_length=20,verbose_name='名称')
    parent=models.ForeignKey('self',on_delete=models.SET_NULL,
                             related_name='subs',# related_name关联的模型的名字，默认是父模型类名小写加_set
                             null=True,blank=True,verbose_name='上级区域')
    class Meta:
        db_table='tb_areas'
        verbose_name='省市区'
        verbose_name_plural=verbose_name
    def __str__(self):
        return self.name